Não informado. (1953). Railway Track and Structures. Simmons Boardman Publishing.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Railway Track and Structures. Bristol, Conn: Simmons Boardman Publishing, 1953.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Railway Track and Structures. Simmons Boardman Publishing, 1953.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.